Rearranging bow lines on a windy day. Bent over at my waist and caught a gust losing my balance. Head first dive into marina just missing bow. Went down to the bottom(9feet) and bumped my head coming back up. Fortunately my wife and a friend were there in case I needed help. Water in marina was unseasonably warm at 72 degrees. I had left my phone, keys, and wallet in my car so no problem there. I worked my way down the dock finger to the end where there is a safety ladder and climbed out easily. No harm no foul. A bit embarrassing. Our club has installed an emergency ladder at the end of all finger docks which is great and a real safety feature. Let's hope it is another 35 years before I fall in again.